Inferences From The Above Graphs

5 Most Commonly Committed Crimes

1) Narcotic Drug Laws

2) Miscellaneous Other Violations

3) Driving Under Influence

4) Moving Traffic Violations

5) Prostitution/Allied

The top 3 crimes account for over 50% of the crimes in LA City

The top 5 crimes account for over 70% of the crimes in LA City

We can see that the number of reporting districts are close to one another. However, here are some interesting observations.

Comparison between Central & Hollywood's Reporting Districts

Central & Hollywood are the locations with most number of unique crime locations - Clearly indicates that there are many possible locations to commit crimes in this locality. However, the number of reporting districts for these 2 locations is just above 50-60% as compared to the location with most number of reporting districts.

Comparison between Devonshire & Wilshire's Reporting Districts

Devonshire & Wilshere are two of the locations with the least number of unique crimes spots. However, both these locations have 83 & 84 reporting districts respectively. This could mean one of the 2 things - (1) The high number of reporting districts in these places have kept the crime in check or (2) These 2 areas generally have less crimes taking place and hence the number of reporting districts could be unjustified.

Possible Justification For Low Crime In Devonshire & Wilshire

We however think that the first case mentioned above is more probable as we can see that the number of cases on are extremely high in locations with low reporting districts.

Number of Unique Crimes Locations In LA

Central & Hollywood account for nearly 25% of the unique crimes locations in LA!

Computing a Crime Reporting Ratio

Something Really Interesting That We Found!!!!

We can simply use a metric to see how well managed or not a particular location is by simply taking the crimes in that area and dividing it by the number of reporting districts.

Something Interesting To Note

Central and Hollywood which had the most cases and low reporting districts have a really high score whereas the locations with low cases and high reporting districts have lesser ratios(Wilshire & devonshire)

This metric could be used as a tool to identify the locations that urgently require more police reporting districts!

It appears as though a threshold of around 150 would be an optimal value to maintain. Anything above this could be considered as locations requiring more districts while anything below this could indicate locations that have surplus reporting districts

Comparing Top 3 Crime Streets In Each Location

Central & Hollywood Lead The Way (Not So Good In This Case)

As we can see from the first horizontal bar chart, the locations are segregated by streets and crime count. Central, Hollywood and Van Nuys account for the top 3 most crimes when only considering the top 3 streets for each locality.

Taking a Microscopic View

6th Street, Hollywood and Sepulveda are the streets with highest crime counts in each of the locations of Central, Hollywood and Van Nuys. Similarly streets with 2nd most and 3rd most crimes in each location are also depicted above

In general, close to 68% (2/3rds) of the crimes take place between 12 noon and 12 midnight.

This is rather shocking because we would generally expect more crimes to take place during the night times (after midnight) rather than in broad daylight.

However, this could also be because of the nature of crimes that take place.

Let's take a slightly closer look on the 2 most crime inflicted locations - Central & Hollywood.

In central, over 2/3rds of the crimes take place between 6AM & 6PM and close to 1/4th take place from 6PM-12 midnight. The number of crimes during the time after midnight is fairly low.

This however, is not the case with Hollywood. Hollywood has over 1/3rds of crimes taking place between the 12 midnight - 6AM period. This could possibly be because of how happening the location is. Another 1/3rd of the crimes take place between 6PM-Midnight! People here probably love the dark!

Narcotic Drug Crimes are the most committed crimes in LA!

We can see that over 75% of the narcotic crimes are committed between 12noon and 12midnight!

DUI Charges are the 3rd most committed crimes in LA.

Over 80% of people caught in DUI are usually caught between 6PM & 6AM.

Food For Thought! (Just A Hypothesis From A Group Of Data Scientists)

The type of crime determines the time at which it is most likely to be committed.

Coming to narcotics cases, most of them are booked between 12noon-12midnight. Usually this is the case because people tend to buy narcotics in the day and do it in the night, forcing peddlers to come out during the daytime to supply this to those who want it.

Driving under influence on the other hand is usually charged between 6PM & 6AM. This makes sense too as people usually tend to drink post 6PM and perhaps get caught more often during these time periods.

Looking at the Moving Traffic Violations pie chart, we see that almost half the charges booked were between 6PM and 12 Midnight. This could mainly be because evening times are generally considered rush hours and that is one time in the day where there is a lot of moving traffic together on the road at once. The MTV charges booked during the time slot between 12 midnight and 6AM are the least and just account for hardly 15% of the total charges.

Outlier Detection

Age

Arrested people of ages greater than 75 are outliers.

Charge Group Code

Arrest Date Month & Day

Number of arrests in the month of january is an outlier. It is anomalously high as compared to the other months of the year.

Number of arrests made on the 31st of a month are anomalously low as compared to other days.

Times of Arrest

Number of arrests suddenly drops to a minimum at 5:00 AM. As night approaches, the number of arrests linearly increases. The peak can be seen at 8:00 PM. From midnight to early morning, the number of arrests linearly fall.